Merge pull request #132 from jupp0r/gcc48-compatibility

GCC 4.8 compatibility

Author: jupp0r

.travis.yml

@@ -16,10 +16,7 @@ env:
 install:
   - sudo apt-get update
   - sudo apt-get install -y software-properties-common cmake curl python-pip git lcov libcurl4-openssl-dev
-  - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
-  - sudo apt-get update
-  - sudo apt-get install -y gcc-5 g++-5
-  - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 1 --slave /usr/bin/g++ g++ /usr/bin/g++-5
+  - sudo apt-get install -y gcc-4.8 g++-4.8
   - sudo add-apt-repository -y ppa:webupd8team/java
   - echo "oracle-java8-installer shared/accepted-oracle-license-v1-1 select true" | sudo debconf-set-selections
   - sudo apt-get install -o Dpkg::Options::="--force-confnew" -y oracle-java8-installer

push/src/gateway.cc

@@ -60,7 +60,7 @@ int Gateway::push(PushMode mode) {
       metrics.push_back(metric);
     }
 
-    auto uri = std::stringstream{};
+    std::stringstream uri;
     uri << jobUri_ << labels_ << wcollectable.second;
 
     auto body = serializer.Serialize(metrics);
@@ -101,7 +101,7 @@ std::future<int> Gateway::async_push(PushMode mode) {
       metrics.push_back(metric);
     }
 
-    auto uri = std::stringstream{};
+    std::stringstream uri;
     uri << jobUri_ << labels_ << wcollectable.second;
 
     auto body = serializer.Serialize(metrics);